// Copyright 2016 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package utils

import (
	"fmt"
	"math/big"
)

// SerializeSN converts a certificate serial number to a byte blob.
func SerializeSN(sn *big.Int) ([]byte, error) {
	blob, err := sn.GobEncode()
	if err != nil {
		return nil, fmt.Errorf("can't encode SN - %s", err)
	}
	return blob, nil
}
